feat: add media converter app and fix compilation errors

app/(app)/pastel/contrast/page.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import { ColorPicker } from '@/components/pastel/color/ColorPicker';
+import { ColorPicker } from '@/components/pastel/ColorPicker';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { getContrastRatio, hexToRgb, checkWCAGCompliance } from '@/lib/pastel/utils/color';